Once the mask is scraped off the traces that lead from the vias to the stars, the legs land nearly perfectly on all 3. The two outer legs have to be splayed outwards just a tiny bit.
Bend the inner set of legs straight down and the outer legs completely under, tin the legs & the traces on the board, remove the spring for clearance, solder legs to traces, fold switch body down flat and solder outer legs to ground plane.
I only destroyed one switch figuring out it couldn't be done reflow-style with hot air on an assembled board, the MCU is directly opposite the switch and I couldn't get enough heat where it needed to be without overheating something else.
This is not a plain 105C or Qlite, it's NLITE. The stars are much more useful. :)